<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="UTF-8" />
		<meta http-equiv="X-UA-Compatible" content="IE=edge" />
		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
		<title>Document</title>
	</head>
	<body>
		<button id="btn">按钮</button>
		<script>
			// 定义一个函数,用来接收jsonp响应回来的数据
			function fn(data) {
				console.log(data);
			}
			btn.onclick = function () {
				const script = document.createElement("script");
				script.src = "http://127.0.0.1:5000/test?callback=fn";
				document.body.appendChild(script);
			};
		</script>
	</body>
</html>
